UPSC NDA Math Model Paper 4

© examsiri.com

Question : 119 of 120

Marks: +1, -0

The sum to n terms of the series

1

2

+

3

4

+

7

8

+

15

16

+....... is

n−1−2−n
1
n−1+2−n
1+2−n

Go to Question:

Prev Question

Next Question